Abstract: A boring apparatus which includes a rotatable cutting head used to cut a hole in a workpiece. The cutting head is mounted on an axially movable support, and is rotatable about and reciprocally movable along the axis between a forward cutting position, to engage and cut the workpiece, and a rearward position spaced from the workpiece. Cutting is performed by a cutting blade which is spaced radially from the axis, and which is movable relative to the rest of the cutting head by a blade advance mechanism. During cutting operation, the blade advance mechanisms move cutting blade both forwardly and radially inwardly through the workpiece wall, in the same direction at which the blade is inclined. The hole is thus formed by lowering the cutting head and then rotating the cutting blade as the blade advance mechanism moves the blade at an angle through the workpiece.

Abstract: A toolholder for removing material from a workpiece wherein the workpiece and toolholder are rotatable with respect to one another. The toolholder includes a body having a plurality of pockets. A roughing insert is carried in one of the pockets of the body. The roughing insert presents a roughing edge. The roughing insert is of a first grade. A finishing insert is carried in another of the pockets of the body. The finishing insert presents a finishing edge. The finishing insert is of a grade different than that of the roughing insert.

Abstract: A device and associated method for drilling a hole in the center of a broken element that is engaged within a bore, thereby enabling the broken element to be retracted by engaging the newly drilled hole. The present invention includes a collar member that defines an open central channel between two opposite ends. The collar member includes a male region adapted to engage the bore should the broken element be broken within the bore below the surface. The collar assembly also includes a female region adapted to engage the broken element, should the broken element extend out of the bore. Regardless of whether the male region engages the bore or the female region engages the broken element, the collar member aligns the open central channel over the center of the broken element. A drill bit is then advanced through the open central channel, whereby the open central channel acts as a drill guide and prevents the drill bit from wandering away from the center of the broken element.

Abstract: A controlled atmosphere machining process which involves a work station for machining a workpiece with an inert gas in an enclosed environment which will not support combustion. The process further includes a vacuum system which removes particulate matter occurring during the machining process and transports the matter to a collecting tank. The inert fluid is recycled through a filter and cooling system and continues to be drawn by the vacuum system into the enclosed machining area of each work station.

Abstract: The invention relates to a method for producing a hole in a workpiece consisting of a fibre-reinforced composite material. The central axis of the hole passes through a predetermined point on the surface of the workpiece and is oriented in a certain determined direction in relation to the longitudinal directions of the fibres in the immediate vicinity of the point. The material is machined simultaneously in both an axial and a radial sense by causing the tool to describe an axial motion and to rotate not only about its own axis (5), but also eccentrically about the central axis.

Abstract: A short coupled hydraulic tapping apparatus for heavy duty tapping operations including a compact, lightweight, hydraulic tool unit and a remote hydraulic power unit, with the entire apparatus being designed for portability. The tool unit includes a structural base having a slide-mounted high torque, low speed hydraulic motor with internal reduction gearing. The motor is slide mounted for directly driving a lead screw for rotation and longitudinal movement. The lead screw is supported by both the slide-mounted motor and a fixed lead nut. The slide or guideway has a length of travel substantially equal to the length of threads on the lead screw. Reversing and stop control devices control the forward tapping and retracting limits of movement. The design provides a lead screw having an internal bore for coaxially coupling with the motor drive shaft and having an internal coaxial receptacle for replaceably receiving a tapping tool.

Abstract: A drill for fiber-filled synthetic plastics has an axially extending body with helical grooves spiraling from a drill point toward a shank end. The grooves define helical lands between them having helical land machining edges. At the point axially tapering land and groove point surfaces converge and land point surfaces with machining edges are radiused to merge gradually with the land surfaces rearward of them. The land machining edges are configured with a negative rake. A plurality of cross notches on the lands extending over an axially extending region of the lands from substantially the axially tapering land point surfaces a predetermined distance toward the shank end are configured to create fiber-snipping crosswise helical cutting edges with a positive rake facing the point.

Abstract: A system for maintaining normality of a tool nose to a workpiece supported on a floor assembly jig adjacent to a carriage on which the tool nose is mounted while the carriage is negotiating a bend in the floor assembly jig includes a support system for supporting the carriage on a rail for longitudinal travel along the rail. The support system has two longitudinally spaced bearing blocks and a slide on each bearing block for mounting the carriage on the bearing blocks for lateral movement of the carriage toward and away from the rail. Each bearing block includes a bearing base in which is journaled a plurality of rollers in rolling contact with a horizontal upwardly facing surface on the rail for rolling vertical support of the bearing base on the rail, and also has at least one roller in rolling contact with a laterally facing surface on each side of the rail for lateral support of the bearing base.

Abstract: A vacuum vice for holding a bowling ball when drilling holes or engraving the ball includes inner and outer o-rings seals which form inner and outer concentric vacuum chambers that work together to form a seal with a bowling ball having surface imperfections or engraving. The inner vacuum chamber holds the ball against the inner seal and a vacuum passageway applies the vacuum to the outer vacuum chamber which seats the ball against the outer seal.

Abstract: A tube cutter tool is insertable into a tube for cutting a coupon from a damaged site on the exterior of the tube. Prior to using the tool, the damaged site is first located from the interior of the tube using a multi-coil pancake eddy current test probe. The damaged site is then marked. A fiber optic probe is used to monitor the subsequent cutting procedure which is performed using a hole saw mounted on the tube cutter tool. Prior to completion of the cutting procedure, a drill in the center of the hole saw is drilled into the coupon to hold it in place.

Abstract: A flat drill bit having a shaft with an axis of rotation and a flat drill bit head connected to the shaft. The flat drill bit head includes opposing flat front and back faces, left and right edgewalls between the front and back faces, and a bottom endwall connected to the left and right edgewalls. The left and right edgewalls are angled relative to the front and back faces so as to define left and right cutting edges that are parallel to the axis of rotation. The bottom endwall includes left and right sections, each being angled in opposite directions relative to the front and back faces so as to define left and right bottom cutting edges. The bottom endwall of the drill bit head has a rounded shape thereby providing curved left and right bottom cutting edges. In an alternate embodiment the bottom endwall is generally straight, thereby providing straight left and right bottom cutting edges.

Abstract: An apparatus for positioning a bowling ball during a drilling process and method that provides reproducible orientations of the ball for accurately modifying and repeating the drilling process is described. The apparatus affixed a bowling ball while exposing a sufficient portion of a surface of the ball where middle finger, ring finger and thumb holes are to be drilled. The apparatus positions the bowling ball for drilling holes of varying pitch without requiring the ball to be removed from its rigidly affixed position within the apparatus. Holes having severe pitches are easily drilled and reproduced, including oval holes having preselected oval rotations. A computer program converts inputted hand measurements to digitized apparatus movements for positioning the ball prior to drilling a desired hole. Digital encoders indicate apparatus movement that is matched with computer output for ease and repeatability in drilling a ball.

Abstract: A threaded hole may be formed in a lid of an underground petrol tank without emptying the tank or removing the lid, using a tool (FIG. 3) having a taper tap section (61), an intermediate tap section (62) and a final tap section (63). At the leading end of the tool, there is a reamer section (60) and supported on the free end of the tool is a centerless hole cutter (50). A resilient mounting transmits drive from the main part of the tool to the cutter (50), but allows the cutter to float. A sleeve (23) surrounds the tool, so that a column of inert gas may be caused to lie in the cutting region. A magnet (57) mounted within the cutter (50) catches and holds a released disk of the cover. Also described is a rig (FIG. 1), for operating the tool (FIG. 3), and a method (FIG. 5) of securing a collar threaded into a hole formed by the tool.

Abstract: The valve seat and guide machine comprises a base structure on which is pivotally supported a pantograph having a major arm on which is mounted a drive motor and minor arm which moves slidably with respect to the major arm. Pivotally attached to each arm of the pantograph is a head portion with a support frame which retains a spherical head and a plurality of sphere seats for supporting the spherical head so that it can pivot around its centerpoint at the center of the sphere. A stepper motor is disposed at the top of the spherical head and a spindle disposed with the spherical head retains a cutting bit and a pilot which extend from the bottom of the spherical head. Small z-axis displacement and spindle feed/retraction along the z-(vertical) axis is provided by the stepper motor. The drive motor rotates a transmission linkage which, in turn, rotates the spindle using cone-shaped pinions to cause the cutting bit, typically carbide, to cut the valve seat.

Abstract: A drill to cut hardly machinable materials has major flanks extending in a backward direction of rotation from major cutting edges with an ascending slope and ultra-hard cutting grains adhered to said major flanks, at least. When the rotating drill contacts the work-piece, the ultra-hard cutting grains adhered to the most backward part of the major flanks to the direction of rotation cut the work-piece at first. As the ultra-hard cutting grains of the major flanks drop off by the cutting, actual cutting parts move to adjacent part forward of the rotation of the major flanks. Finally, major cutting edges take over the cutting of the work-piece.

Abstract: A vacuum vice for holding a bowling ball when drilling holes or engraving the ball includes inner and outer o-rings seals which form two vacuum chambers that work together to form a seal with a bowling ball having surface imperfections or engraving. The inner vacuum chamber holds the ball to a buoyant cup. The outer vacuum chamber seats the ball against a contoured, hard rim surface and is connected by a leakage path around the inner seal to a piston chamber which pulls on the buoyant cup to further seat the ball. The outer seal is mounted on a movable housing that automatically adjusts to the size of the ball.

Abstract: A coolant delivery method and apparatus comprising a high and low pressure pump for providing high and low pressure coolant flow through a common conduit to a coolant orifice of a cutting tool of a machine tool or a nozzle of a workpiece flushing station. The high pressure pump has a cylinder with a reciprocable piston operably coupled to a drive for moving the piston to discharge coolant under high pressure to the cutting tool while a workpiece is machined by the tool. A one-way flow valve in the conduit permits coolant flow from the low pressure pump to reach the cutting tool as well as the high pressure pump cylinder to recharge the cylinder with coolant while the high pressure pump is not discharging coolant. Cutting tool failure as well as an orifice obstruction is detected by monitoring coolant flow from the high pressure pump during each machining cycle of machine tool operation.

Abstract: A method of through-hole drilling of metal workpieces having sufficient ductility to create hinged drill caps, which comprises: while carrying out through-hole drilling with low thrust drill tips, directing a fluid jet stream against the drill exit side of the workpiece with sufficient force to retain and resulting drill cap closed against the exit side until such drill cap is completely annularly severed from the workpiece, the jet stream being oriented substantially coincident with the revolving axis of the drill. The fluid of the jet stream may be a machining liquid coolant, a gas, or a water-based solution. The jet stream has a diameter upon impingement with the workpiece that is less than the diameter of the exit opening created by the drill.

Abstract: A drill bit for forming holes in a printed circuit board. The drill bit includes a first end including a tip for contacting the material of the circuit board. A second end of the drill bit is attached to apparatus for rotating the drill bit. A cutting edge is in the vicinity of the first end. A pressure pad is opposite the cutting edge. A flute winds upwardly about the drill bit in a helix. An angle of the helix with respect to a longitudinal axis of the drill bit varies continuously, wherein the angle is about from about 15.degree. to about 35.degree. in the vicinity of the first end and increases with increasing distance from the first end to at least from about 35.degree. to about 65.degree..

Abstract: A clamping device includes a housing, removably connected to a drill motor, which has a first end portion adapted to be received within an aperture defined in a drill plate. The first end portion of the housing also defines a number of openings in which respective ones of a plurality of ball bearings are disposed. The clamping device also includes means for forcing each ball bearing outwardly within a respective opening defined in the first end portion of the housing such that portions of the ball bearings are extended outwardly beyond the housing and are urged against the drill plate. Thus, the drill motor can be securely clamped to the drill plate. The clamping device can also include a mandrel defining an internal bore through which the cutting element extends. The mandrel typically has an exterior surface in which a plurality of recesses are defined. Each recess can be aligned with a respective opening defined in the housing and can be adapted to receive a respective ball bearing.

Abstract: A kit for reaming the governor bores of used motor vehicle transmissions includes several cutting tools having cutting heads of different diameter. The diameters of the cutting heads are matched to the differing diameters of the governor bores of different transmissions. Each of the cutting heads is generally flat and has two pairs of flat parallel edge faces. The edge faces of the two pairs are normal to but do not intersect one another. Cutting tips project outward from the zones between neighboring edge faces. The kit further includes a guide for the cutting tools, and the guide has a centering element as well as several pairs of holes. The holes of different pairs have differing relative positions which correspond to the differing relative positions of threaded holes in the different transmissions. This allows the guide to be connected to any of the transmissions. The kit also includes several adapters each of which is provided with first and second centering elements.

Abstract: A portable, handheld, power tool is operable to rotate a tap in an opening in a workpiece to form an internal thread convolution in the opening. The power tool includes a chuck which holds the tap. Left and right handles extend in opposite directions from the chuck and are connected with a housing. A motor is disposed in one of the handles and is connected with the chuck by a drive mechanism. Manual actuation of a motor control lever mounted on the one handle initiates operation of the motor. Upon operation of the motor, force is transmitted through a drive mechanism to the chuck to rotate the chuck and the tap. Upon interruption of operation of the motor, the tap may be rotated under the influence of force which is manually applied to the handles.

Abstract: A method of drilling ductile materials with split-point drills includes the steps of placing a split-point drill above a ductile material having an entrance side, drilling a hole in the ductile material with the split-point drill from the entrance side to an exit side thereof, breaking through a surface of the exit side with the split-point drill a first predetermined distance to form a drill cap, retracting the split-point drill a second predetermined distance, and accelerating the split-point drill through the surface of the exit side to remove the drill cap from the ductile material.

Abstract: A chip buildup detection and control apparatus having a flow transducer and flow monitor to measure and monitor coolant flow to a cutter of a machine tool for detecting excessive chip buildup on the cutter and removing the buildup on the cutter which decreases machining cycle time while increasing cutter life and machine tool production. Excessive chip buildup on the cutter is detected when coolant flow to the cutter drops below a minimum flow rate limit. Buildup is removed upon detection by initiating a "pecking" cycle where the cutter is retracted from its position of engagement with the workpiece being machined for a predetermined dwell period of time. The machining cycle is aborted if coolant flow does not rise above the minimum limit by the end of the dwell period. If coolant flow rises above the minimum flow limit, the cutter is advanced almost to its previous position of engagement with the workpiece and machining is resumed.

Abstract: An automatic drilling machine has an electric drilling unit on which a cylindrical cutter is rotatably mounted. The drilling machine includes a drill motor for rotating the cutter and a feed motor for linearly moving the cutter for the purpose of drilling into materials such as concrete. The current flowing through the drill motor before a drilling load is imposed thereon is detected for a microprocessor to determine the type of the cutter being used. The drill motor is driven at a rotation speed suitable for the cutter being used and the feed motor is driven at a speed such that the rotation speed of the drill motor thus set is maintained unchanged. Particularly, the drill motor is driven at a reduced rotation speed from the start of drilling until a predetermined drilling depth is reached to reduce chatter vibration which may otherwise be generated if the drill motor is driven at a regular constant speed from the beginning of drilling until the end.

Abstract: A submersible bus type connector using hollow posts or flat pad posts is machined from conductive metal bar stock extrudate in a continuous machining line, to form the posts and the drilled and tapped holes for the conductor connection hardware before being cut-to-length to form a connector having the desired number of side-by-side posts all machined from one block. The process produces an improved and yet low cost connector.

Abstract: A quick stop device for abruptly interrupting the cutting of a workpiece by a cutter is disclosed. The quick stop device employs an outer housing connected to an inner workpiece holder by at least one shear pin. The outer housing includes an appropriate shank designed to be received in the spindle of a machine, such as a machine tool. A cutter, such as a drill bit, is mounted in a stationary position and the workpiece, mounted to the workpiece holder, is rotated during engagement with the cutter. A trigger system includes at least one spring loaded punch disposed for movement into engagement with the workpiece holder to abruptly stop rotation of the workpiece holder. This action shears the shear pin and permits continued rotation of the spindle and outer housing without substantially disturbing the chip root formed during cutting.

Abstract: An improved tool and method for the machining (e.g., boring, cutting, grinding and the like) of a workpiece. The tool includes a body that can be connected in a cantilevered arrangement to a machine for rotating machining operations and has fluid distribution channels formed in the body in a predetermined arrangement. The tool also includes a machining surface and at least one bearing surface formed on the peripheral surface of the tool. Pressurized fluid is provided through the fluid distribution channels in use, which, enable creation of a fluid bearing between the tool and an opening in the workpiece which has been machined by the tool. In addition, the tool can also include additional fluid distribution openings for cooling and cleaning of machining surfaces.

Abstract: To allow automatic determination of the order of drilling in slot drilling.The positions of holes located along a line are described via a binary vector. The order of drilling is also described via a binary vector. The former binary vector is made to correspond to the latter binary vector through a conversion matrix, where every corresponding partial matrix is regular. The positions of the holes are determined from the drilling order, or the drilling order is determined from the positions of the holes by their correspondence.

Abstract: A system and method for optimizing drill coordinates in a multi-layer printed circuit board, to correct for interlayer shift during lamination. A set of test patterns, in the form of a cross formed by two orthogonal conductor lines, are defined at each corner of each layer in the same nominal location. Under ideal conditions, the test patterns of the layers in each corner are lined up one above the other, without any offset. A counter sinking tool is used to cut a conical bore in the location of the test patterns, so that every test pattern cross is interrupted in four places, generating a four segment pattern in each layer. A high resolution camera is placed above the countersunk bore to form a single image of the exposed segment edges of all the test patterns exposed by the bore. The image is analyzed to determine the amount of shift of each layer. If all patterns are perfectly concentric, all crosses are perfectly aligned.

Abstract: A method for machining is disclosed wherein cutting edges of a cutting tool are oriented at a negative rake of from approximately 0 degrees to -10 degrees. The tool is rotated at a speed of between approximately 15,000 rpm to approximately 30,000 rpm, after which the cutting edges are engaged with a workpiece. Thereafter, power applied to the cutting tool is varied so as to maintain constant rotational speed of the cutting tool while the cutting edges are engaged with the workpiece. During the machining process, vibrations are absorbed by a hydraulic cushion, allowing the tool to rotate without vibration, with heat generated by the machining process being confined mainly to the removed material.

Abstract: A surgical instrument that includes a rigid outer member within which is disposed a hollow inner member having rigid proximal and distal ends and a region disposed between the rigid proximal and distal ends that is relieved to render such region relatively flexible. The flexible region is integral with a portion of the proximal end disposed adjacent to the flexible region. The inner member transmits force (such as torsion) applied to its proximal end to move a cutting implement disposed at its distal end and cause it to cut tissue admitted through an opening in the distal region of the outer member. In another aspect, a region of the inner member is weakened (e.g., by relieving an integral region of the member) with respect to the remainder of the inner member to cause this region to break if the force (e.g., torque) applied to the inner member exceeds a predetermined threshold.

Abstract: First of all, a high molecular sheet comprising a composite whose principal component is a special water soluble high molecular compound, or a multilayer sheet wherein a water soluble high molecular layer is piled on sheet material is prepared. Then, said sheet is layered on the entry side of a lamination substrate comprising insulating material and metallic foil. In this state, thru-holes are formed in the lamination substrate through said sheet. When forming thru-holes, said water soluble high molecular compound serves as a lubricant so as to extend drill life. In addition, it is possible to drill a lot of substrates, which are layered, at one time, resulting in the improvement of production efficiency.

Abstract: A member is disposed against a motor vehicle wheel at a position near the center of a bore for receiving the wheel axle. The member may be a collet expansible radially against the annular wall defining the central bore. Alternatively, a ring may be moved into concentric relationship with the central bore and then disposed against the back side of the wheel. Clamping members are then moved, preferably axially and rotationally, against the wheel front side at a position near the wheel periphery. A snubber ring is thereafter moved against the wheel back side, preferably at a position corresponding radially to the positions of the clamping members against the wheel. Each member at the wheel periphery may be moved by introducing hydraulic fluid into an individual one of a plurality of cylinders to move a piston coupled to such member.

Abstract: A drilling method and a drilling apparatus of a hard brittle material in which a core drill is used for abrasive grinding of high accuracy and high durability.

Abstract: An end effector adapted for attachment to and accurate positioning by a robot is provided for positioning a right angle shaped workpiece at a desired position against a panel and drilling a pair of accurately located positioning holes through the workpiece and the panel. The end effector includes a rear plate having a conventional tool connector and adapter that can be grasped and manipulated by the robot. A frame is cantilevered on the rear plate and supports a shuttle mounted on horizontal linear bearings for lateral motion of the shuttle. A pair of vertical bearings on the shuttle supports two horizontal support plates for vertical motion on the shuttle. A drill and an inserter are mounted on the support plates for lateral motion with the shuttle, and for vertical motion on the shuttle.

Abstract: A drill and countersink tool having a drill bit member fixedly attached to a mounting member. The mounting member has exterior threads by which it is ajustably mounted in a countersink member in a manner that the drill bit extends downwardly from the countersink member. A lock nut is threaded onto the mounting member to come into locking engagement with the countersink member. By loosingly the lock nut, the position of the drill bit and the mounting member can be adjusted for different drill lengths.

Abstract: A device utilizing positive and negative fluid pressure and the plurality of tandem operating components for securely clamping a drill motor to a drill plate in order to drill precisely positioned holes in a workpiece includes an annular mandrel and annular collet concentrically disposed about the cutting tool. A first end of the collet includes a plurality of longitudinally extending fingers while the mandrel has a tapered end portion having a larger external diameter than the center cylindrical portion of the mandrel. A plurality of pistons are also coaxially disposed about the cutting tool and within piston subchambers defined within the piston housing of the clamping device to extend and retract the mandrel and the collet. Once extended, the longitudinally extending fingers of the collet overlie the center cylindrical portion of the mandrel. Thus, the clamping device may be inserted through an aperture defined in a drill plate.

Abstract: A method of drilling a through-hole for inter-surface conduction in a laminate for a printed wiring board, in which the heat generation in a drill bit can be inhibited in drilling holes, quality holes can be highly efficiently made in the presence, on the laminate surface, of a novel water-soluble lubricant sheet which has high strength and can be handled easily, the method comprising drilling the through-holes in the presence of a water-soluble lubricant sheet which has a thickness of 0.02 to 3 mm and is formed from a mixture of 20 to 90% by weight of a polyether ester with 10 to 80% by weight of a water-soluble lubricant.

Abstract: A method of installing a combination lock deadbolt assembly includes the steps of providing a combination lock deadbolt assembly for mounting on a door surface in combination with a drill resistant hard plate. The hard plate, mounted on the outer door surface, includes legs extending through the door for attachment to the deadbolt assembly. A drill guide is provided having a tapered outer surface which corresponds to tapered openings in the combination lock deadbolt assembly. In use, the tapered drill guide is inserted into the openings in the deadbolt followed by insertion of a drill bit which drills holes through the door. After drilling each hole, the larger holes are drilled to facilitate attachment leg insertion into the door. The deadbolt can then be mounted to the door surface and to the drill resistant hard plate. A combination dial lock can then be mounted in the deadbolt assembly.

Abstract: A seam tracking robotic drilling machine (10) is disclosed which is capable of moving a drill head along the seam (12) between abutting skin panels (16, 18) to drill a plurality of precisely positioned holes (18) through the panel. The machine (10) includes a perimeter support frame (20) which mounts a platform (36) for rotation about an axis (38) generally perpendicular the panels to be drilled. The platform supports a carriage (48) for movement along an axis 50 parallel the surface of the panels and in the direction of the seam while the carriage (48) supports an inner carriage (62) for movement along axis 60 perpendicular thereto. A drill head (74) is mounted on the inner carriage (62). A series of variable height vacuum cup assemblies (22-28) support the perimeter support frame (20). A similar series of variable height vacuum cup assemblies (66-72) support the inner carriage (62).

Abstract: A method and apparatus for producing deep drill holes, particularly in wood and similarly structured materials, in which two drill elements, embodied as hollow shafts with cutting ends formed as cutting elements and concentrically disposed one within the other, are operated at different speeds, the cutting end of the interior drill element running behind the cutting end of the exterior drill element.

Abstract: A cylindrical bit is made from an elongated shaft with a spiral blunt pointed cutting element secured to one end by welding or molding. The upper end of the shaft is held in the chuck of a hand-held drill. The drill, battery or mains powered, rotates the shaft. The rotating shaft is repeatedly plunged into the compost mixture to add air and air holes to improve biological decomposition and conversion of organic material into a humus-like mixture (compost).

Abstract: A cradle for a hand-held tool for machining of cylinder head valve guide holes. The tooling has a pilot portion. A collar has a passage for the tooling and is shaped to engage a least worn portion of a valve seat associated with the valve guide hole around the circumference thereof without engaging more worn portions of the valve seat. The cradle comprises a bracket which has a passage for the tooling without passage of the collar so that the bracket can bear on the collar. Force is applied to the bracket to hold the collar in engagement with the valve seat.

Abstract: A PCB working machine includes a work table for holding a PCB substrate in place with a suction force; a spindle carrying a cutting tool; a controller for moving the spindle in accordance with a predetermined pattern; a collet chuck provided at a distal end of the spindle for clamping the cutting tool; a floating head encircling said collet chuck at a distant position and having an end plate in which a plurality of air blowing holes are provided; and an adjuster for adjusting the positional relationship between the floating head and the cutting tool.

Abstract: Methods and apparatus for on-site machining are disclosed. The internal portions of devices such as turbine valves must be machined in place, but present certain areas, such as the valve seat, that cannot be readily accessed from an external surface. The present invention provides methods and apparatus whereby such surfaces can be machined using a fixture to which a milling head or other machine tool is attached. In a preferred embodiment, a mounting plate is provided that contains holes or other features that cooperate with the structure to which the plate attached, thereby providing a rigid base for the machining operation. The present inventions also preferably uses a tool bar that has a cutting head that retracts and swivels. In its initial position the cutting head is swiveled inside the tool bar and the assembly can be inserted into a structure. Once inside, a threaded push rod is turned and manipulated to cause the cutting head to swivel, and then it is locked in place.

Abstract: An apparatus for drilling holes in flexible materials used for flexographic printing includes a table which receives single sheets of flexible material which are to be drilled by a downwardly moveable drill. An optical mirror, TV-camera and monitor serve as viewing means to directly view the exact position on the surface of the material to be drilled. The optical mirror occupies a first position between the moveable drill and the flexible material, the first position being directly below the drill and directly above a target location on a single sheet. The optical mirror is retractable to a second position away from the path of the moveable drill, the optical mirror being replaced in the first position after the drilling is accomplished.

Abstract: A method and system for securing an anchor in a hard substance or rigid material include a cutter bit for drilling a hole in the hard substance, an anchor for fitting within the drilled hole, the process of drilling the hole using the cutter bit, the drilling machine for using the cutter bit, and the resulting improved hard substance or rigid material that may be used as a curtain wall for fastening to a building or similar structure. The hard substance may be a sheet of granite, marble, glass, limestone, or other similar material. The invention includes an anchor that has a cylindrical shaft, a bevelled head portion, and an expanding collar for fitting within and securing the anchor in a drilled hole of the hard substance. The drilled hole includes a bevelled bottom portion that receives the bevelled head portion of the anchor and the expanding collar. A placement device transmits an impacting force to place the expanding collar around the bevelled head portion of the anchor.

Abstract: The invention provides an entry board for use adjacent a printed circuit board during drilling therethrough comprising a drill lubricant distributed over the entry board. The board may comprise two or more separable laminar components (A, B) one of which has the drill lubricant. There is also provided a composite entry or backing board for use adjacent a printed circuit board during drilling therethrough, in which the adjacent faces of two laminar components of the entry or backing board are joined such that there is no relative slip during transportation, cutting and positioning, and they are separable by peeling them apart after use.

Abstract: The invention relates to a process for production of workpieces (1), especially motor vehicle drive assemblies, on a production line, the workpiece (1) having lateral surfaces (3, 11, 12, 18, 21) extending more or less parallel to a longitudinal axis (4) and also frontal areas (7, 8) extending more or less perpendicular to these surfaces and being pivotable and immobilizable in a number of machining positions for the individual machining steps.For the purpose of machining the lateral surfaces (3, 11, 12, 18, 21) and partial areas (2, 5, 6, 20) of the workpiece (1) accessible from them, the workpiece (1) is moved to the individual production stations with its longitudinal axis (4) vertically directed, at the individual production station is pivoted about the longitudinal axis (4) into the machining position required, and is immobilized and clamped in this position.